# Andrej Schreiner

> Head of AI at T-Systems in Cologne. Product builder shipping sovereign AI at scale.

Andrej Schreiner leads the AI Business Unit at T-Systems International. He is based in Cologne, Germany. This file is a factual summary of the public site. Fuller context: https://andrejschreiner.com/llm.md

## Identity

- Name: Andrej Schreiner
- Role: Head of AI Business Unit, T-Systems International (2024–present)
- Location: Cologne, Germany
- Site: https://andrejschreiner.com/
- LinkedIn: https://www.linkedin.com/in/andrejschreiner
- X: https://x.com/andrejschreine3 (@andrejschreine3)
- GitHub: https://github.com/andrej-schreiner
- Medium: https://medium.com/@andrej.schreiner

## About

Hi, I’m Andrej. I like bringing great people together to build products customers use and enjoy, and taking an idea all the way to a working business is what I love most.

At T-Systems, my team and I built AI Foundation Services from scratch. Today it serves 300+ enterprise customers and is growing triple digits year on year. Companies get 30+ open-weight models through one API, running on AI Factories in Germany, and since July that includes frontier models like GLM 5.2 on our NVIDIA Blackwell fleet in Munich. I own the product, the team and the business, and I stay close to the engineering and to our customers.

Before that, at Cumulocity, I built software that helps companies run wind farms, automate production and predict equipment failures with IoT and machine learning. That included managing fleets of industrial devices and updating their software remotely. I also started thin-edge.io, an open-source Rust framework that connects industrial devices to the cloud and manages the software running on them.

I work best with people who know their stuff, speak openly and follow through, and I always enjoy hearing from engineers and founders about what they’re building.

## Key products

- [AI Foundation Services](https://docs.llmhub.t-systems.net/): Sovereign LLM platform on Deutsche Telekom's Industrial AI Cloud with NVIDIA. 30+ models via a unified API, 40+ engineers and researchers, 300+ enterprise customers in healthcare, defense, automotive, and the public sector, triple-digit year-on-year growth. Live platform: https://ai.t-systems.net/en Case study: https://andrejschreiner.com/#case-study-ai-foundation-services ColQwen2-7B reached #1 on ViDoRe and is released under CC BY-NC: https://huggingface.co/tsystems/colqwen2-7b-v1.0 Early expert blog, From hype to harvest: https://www.t-systems.com/de/en/insights/newsroom/expert-blogs/generative-ai-from-hype-to-harvest-712334
- [Cumulocity IoT Edge](https://andrejschreiner.com/#case-studies): Industrial IoT edge product (then Software AG, 2019–2023). 125% year-over-year revenue growth. Gartner Leader (IIoT MQ 2021), Forrester #1 IIoT Wave (2021). Product: https://www.cumulocity.com Webcast with Dell, How to Get an IoT Edge: https://www.brighttalk.com/webcast/17917/408217 Product walkthrough: What’s New in Cumulocity IoT Edge 10.15 (Nov 2022): https://andrejschreiner.com/assets/video/cumulocity-iot-edge-10-15-walkthrough.mp4
- [thin-edge.io](https://andrejschreiner.com/#case-studies): Open-source, cloud-agnostic IoT edge framework in Rust. Co-initiated and led product, 2021–2023. Wrote the original vision.md: https://github.com/thin-edge/thin-edge.io/blob/main/vision.md. Site: https://thin-edge.io/ Repository: https://github.com/thin-edge/thin-edge.io Community talks on the site under the portfolio card. Customer proof: Kunbus (Revolution Pi, 1M+ devices) builds on thin-edge.io and Cumulocity (Cumulocity success story): https://www.cumulocity.com/success-stories/opening-up-the-iiot-ecosystem-with-cloud-agnostic-intelligence/
- [E.ON Optimum](https://andrejschreiner.com/#case-studies): SaaS energy management on Google Cloud (2016–2019). Launched in the UK, Germany, and France for 60,000+ customers. Customer proof: Tesco runs Optimum across 2,900+ UK stores, with £37M in energy savings since 2018: https://www.eonenergy.com/business/why-eon/case-studies/tesco-energy-management.html

## Pages

- [Home](https://andrejschreiner.com/): Portfolio, experience, and case studies
- [Impressum](https://andrejschreiner.com/impressum.html): Legal notice
- [Datenschutz](https://andrejschreiner.com/datenschutz.html): Privacy policy
- [LLM profile](https://andrejschreiner.com/llm.md): Longer public summary
- [Full site content](https://andrejschreiner.com/andrej-schreiner.md): All page content as Markdown, section by section, with every link and a references list (identical copy: https://andrejschreiner.com/llms-full.txt)